The radial stress-resistant QDG series swivel joints are a torsion protection that can be used as an adapter and are always used in situations where process-related higher radial forces are exerted on the swivel joint.
The QDG series swivel joints are a further development of the compact DG series.
The swivel joint equipped with two marble runs can safely absorb potential momentums and radial forces. This alleviates the strain on the seal in the swivel joint and increases the lifetime of the swivel joint.
The QDG series swivel joints consist of two halves designed as bushing and pin. The pin enters the bushing being supported on two marble runs. The marble runs are sealed against the medium and the environment with an O-ring each.
Depending on the version or installation position of a hose or pipe line, radial forces can be applied on the swivel joint e.g. by the weight of the hose or pipe line. Conventional swivel joints are not sufficiently dimensioned for this type of load. This is where the radial stress-resistant swivel joint comes into play. Equipped with structural measures such as two ball tracks and, depending on the version, two seals, it is capable of absorbing these radial forces. Compared with a conventional swivel joint with just one ball track, the radial stress-resistant swivel joint offers a significantly longer service life and therefore lower maintenance and repair costs under the given operating conditions.